76mm Loki Convolute XX Phenolic Liner and Kraft paper Casting Tube - Casting tube ID is 2.551".
These heavy duty liner tubes stand up to heat and pressure far better than spiral kraft phenolic liners. They use high quality kraft paper casting tubes 47.5" long. 76mm tubes will fit ANY 75mm or 76mm commercial snap ring motor hardware including Ellis Mountain, and fit the ID ONLY of threaded cases like Aerotech and CTI.